Vehicle Identification Device Re-Identification via V2V Communication
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Solution Overview
Problem
In vehicle identification systems, when a preceding vehicle is obstructed by an interrupting vehicle, the re-identification process is time-consuming due to the need to re-collate communication and sensor data, disrupting continuous vehicle-to-vehicle communication.
Innovation Solution
A vehicle identification device equipped with an external sensor, vehicle speed sensor, and communication unit, which calculates an estimated relative distance and re-identifies the preceding vehicle using pre-existing communication data, allowing for quicker re-identification by comparing estimated and actual distances and speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the system waits for sensor detection to re-identify the preceding vehicle after it is lost, then identification accuracy is maintained, but re-identification time increases significantly
Solution Approach 1:
The system performs preliminary actions by maintaining vehicle-to-vehicle communication data as a backup identification method. When the external sensor loses the preceding vehicle, the system immediately uses the pre-acquired communication information (vehicle speed, position) to re-identify the vehicle, avoiding the need to wait for sensor detection and significantly reducing re-identification time while maintaining reliability through multi-source data validation
2Reliability
If the system uses only sensor detection for identification, then identification accuracy is high, but the system fails when sensors are obstructed by interrupting vehicles
Solution Approach 1:
The system introduces vehicle-to-vehicle communication as an intermediary identification method that operates independently of external sensors. When sensors are obstructed by interrupting vehicles, the communication system continues to provide vehicle identification information through direct vehicle-to-vehicle data exchange, ensuring system robustness and continuous operation without relying solely on sensor detection
Solution Approach 2:
The system changes the identification parameters by switching between sensor-based physical detection and communication-based data exchange. When sensor detection fails due to obstruction, the system transitions to using communication parameters (vehicle speed, position, identification codes) to maintain identification capability, thereby improving adaptability to different operational conditions
3Measurement precision
If the system performs full data collation for re-identification, then identification accuracy is maintained, but processing time increases
Solution Approach 1:
The system applies partial action by selectively using only the necessary communication parameters (vehicle speed, position, identification code) for re-identification rather than performing complete data collation. This partial approach maintains sufficient identification accuracy while significantly reducing processing time, as the system uses only the critical subset of data needed for quick vehicle re-identification
Data Source
AI summary
A vehicle identification device includes an external sensor configured to detect a situation around a host vehicle, a vehicle speed sensor configured to detect a speed of the host vehicle, a communication unit configured to perform vehicle-to-vehicle communication with non-host vehicles, and an electronic control device. The electronic control device is configured to: acquire non-host vehicle detection information, acquire non-host vehicle communication information, identify a preceding vehicle, determine whether or not the in-vehicle sensor has lost the preceding vehicle, recognize the vehicle speed of the host vehicle, calculate an estimated relative distance between the lost preceding vehicle and the host vehicle when the preceding vehicle has been lost, and re-identify a communication continuation vehicle that used to be the preceding vehicle.